Home / 20,324,870,928.78-28,049,078,844.18-12,187,999,101.12

Finding the Fourth Proportional to 20,324,870,928.78, 28,049,078,844.18 and 12,187,999,101.12

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Solution

The fourth proportional to 20,324,870,928.78, 28,049,078,844.18 and 12,187,999,101.12 is: 16,819,892,679.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324,870,928.78 : 28,049,078,844.18 = 12,187,999,101.12 : x
  2. Step 2: Convert to fraction form
    20,324,870,928.78/28,049,078,844.18 = 12,187,999,101.12/x
  3. Step 3: Cross multiply
    20,324,870,928.78x = 28,049,078,844.18 × 12,187,999,101.12
  4. Step 4: Simplify right side
    20,324,870,928.78x = 341,862,147,740,109,897,728
  5. Step 5: Solve for x
    x = 341,862,147,740,109,897,728/20,324,870,928.78
  6. Step 6: Final answer
    x = 16,819,892,679.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.